Corporate mail for a small organization without limits on sending letters?

Question

Mail server

It is required to organize a mail service for a small organization. What solutions can be used to do this most efficiently and inexpensively?
It is necessary to organize convenient sorting and storage of mail messages.

Initial data:
- 40-50 computers, 40-50 e-mail users
- 40-50 mailboxes
- volume of correspondence - up to 100-300 messages per day (incoming and outgoing), but there is an important point, in connection with which I had to look some kind of corporate solution, periodically from 2 to 5 times a month it is necessary to send information to clients at a time or per day, and this is about 5000 letters from one specific mailbox, of course, all free resources cannot allow this, either restrictions, or they are mistaken for spam mailings, but this is not spam.

What we want:
- automatic sorting of incoming messages by filters
- convenient mail search
- good anti-spam
- web interface + thick client, it is desirable to be able to configure it in Outlook.
- within 10,000 - 15,000 rubles
- register your domain and in the future also launch a website on it, but so far only mail - you need it yesterday ... =(

Answer 1

Yandex Connect (free) + any mailing service for mass mailings separately, https://sendpulse.com/ for example, there are a lot of them - google it.

Answer 2

Good afternoon, Konstantin.
I'll split your question into two parts:

1. Setting up mail on a domain
   
2. Organization of mailings to clients
   

I. Setting up mail on the domain
I propose to consider a few popular tools that I have experience using.
And there, and there, there is:

• antispam
  
• message filters
  
• web client
  
• you can use any mail client, SMTP/IMAP is available
  
• link to your domain
  

A) Yandex.Connect
In the basic use case (it looks like this is your case), the service will be provided free of charge .
If you want chips (additional space on the cloud disk, active use of the wiki), then 190 rubles per user also fits into the budget (190 * 50 = 9500 rubles).
More pricing details here
B) Google GSuite
is famous for its collaboration tools:

• tables
  
• Documentation
  
• Videoconferencing
  
• calendar organizer
  

If this functionality is not used, there is no point in overpaying.
The price in the basic version is ~6$ per user. At the current rate, it leaves for your budget (6 * 50 * 63 = 18898 rubles ).
Tariffs can be found here
The option is relevant if the key functionality described above is in demand.
II. Organization of mailings to customers
Let's start with the ambiguities. Questions are numbered for ease of answering.
From a comment:

mailing is carried out from a program that generates invoices for customers, and ideally, in this program, you need to configure the sending settings and send through it

have questions:

1. Interested in what kind of program (name)?
   
2. Is it possible to modify the program code to use an external API?
   

Bulk sending letters from a corporate address served by a mail service prevents you from making limits on the mail service itself.
Therefore, a solution option is to use a mailing list service to serve corporate addresses in addition to the mail service.
This is relevant if the answer to my second question is yes.
I like the Mailgun service (mailgun.com).
Integration will require:

1. Create an account
   
2. Verify domain rights
   
3. Implement API calls in the places where customer invoices are generated
   

The price in case of 5*5000 letters is within the tariff of $35. You can find more details about the rates here.
Why is the Mailgun option less likely to end up in Spam?

• They use different IP addresses not seen in SPAM mailings
  
• They are tailored for mailings (there are no internal limits - protection against virus attacks)
  

However, email services have their own SPAM analyzers that may consider your email to be spam.
I recommend reading this article on the causes of emails getting into spam and following the recommendations.
I expect you to answer my questions and success with setting up corporate mail and mailing lists.
Sincerely,
Oleg Raev
CIO of Athanor

Answer 3

And what is the question? If you want, do it. If you want, but you don’t know how, there are freelance exchanges. If you want, but do not know how - there are reference materials. Or do you seriously expect that they will write a sheet for you on a couple of sheets with instructions in pictures?